Gas-regulator.



GAS REGULAT0R PPPPPPPPPPPPPPPPPPP Y1, 1911.

Patented Oct. 3, 1911 FRANK M. BROOKS, OF NEW YORK, N. Y.

GAS-REGULATOR.

Specification of Letters Patent.

Patented Oct. 3, 1911.

Application filed July 1, 1911. Serial No. 636,460.

To all whom it may concern:

Be it known that I, FRANK M. Bnooxs, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have in vented a new and useful Improvement in Gas-Regulators, of which the following is a specification, reference being had to the accompanying drawings.

Gas regulators resembling in some respects those to which this invention applies have been long known and in general use for a great many years, the best one known to me being that which is described in United States Letters Patent No. 890,122 dated June 9, 1908 and which have been made and sold in large numbers. In the use thereof, however, and of others of similar construction, a difficulty at times presents itself which seems to depend upon the quality of the gas with whichthe regulator is used, that is to say, the spring which effects the retraction of the valve is so located that one end abuts against the inner surface of the tip close adjacent to the gas exit hole therein and the other end abuts against shoulders or equivalent supporting surfaces on the valve itself, the result being that the upper end of the spring, the end of the needle valve itself and the walls of the tip adjacent to the gas exit hole afford many surfaces upon which deposits from the gas or other obstructing matter can accumulate, so that after a while the supply of gas and the proper operation of the fixture is apt to be interfered with. Under this present invention, therefore, I locate a spring of suitable construction not at the gas exit end of the valve, but at its opposite end, where the gas passages are large and spacious, so that the upper end of the needle valve is left free and clean and thus the stated objection is avoided.

Referring to the drawings, Figure 1 illustrates a longitudinal section of the invention; Fig. 2 illustrates a transverse section thereof; Fig. 3 illustrates an elevation of the needle valve with the spring connected therewith; Fig. 4 illustrates an elevation of the regulating thumb screw; Fig. 5 illustrates an endwise view.

The more important features of the in vention are a centrally located needle valve which moves longitudinally through the fixture, the point of the valve, in a manner well understood, permitting and preventing the passage of the gas through the gas outlet in the tube by entering to a greater or less degree into that opening, so that when fully seated therein, the gas is shut off and when farthest withdrawn therefrom the greatest flow of gas is permitted. This valve is made in the form of a thin plate so as to afford the least possible obstruction to the volume and pressure of the gas with in the fixture, and means are provided whereby the needle valve is adjusted in minute gradations so that the flow of gas may be regulated with great exactness.

Referring now to the drawings, they illustrate one form only in which the invention may be embodied. The construction and arrangement of the parts as illustrated, however, I have found to be a useful and economical form in which to make and combine them.

1 represents the body of the regulator. It is suitably threaded as at 2 for connection with the gas supply pipe and at its other end is provided with a suitable terminal or tip 3 provided with the gas exit hole 4. The tip 3 may be made integral with the body of the fixture instead of being a separate part as shown. The body part may also be provided wit-h threads, as at 5,if desired, for convenient attachment of other devices, as, for example, a gallery or support for a globe or shade.

G is the needle valve. As stated, it is a thin piece of metal, preferably having a broad rear part 7 and a reduced section 8 provided with the tapering needle valve extremity 9. A hole 10 is made through it and the width of the outer part 7 is such relative to the interior of the body part that its opposite edges shall rest in and be guided by oppositely located grooves 11, 11, made in the body part.

12 is the regulating screw. It has a thumb nut 13 on its outer end and a tapering or conical point 141 on its inner end. The body of this device is screw threaded as shown, the threads working in a corresponding threaded hole 15 made through the wall of the body part at such point that when the parts are assembled, the conical point 14 of the regulating screw will register with the hole 10in the needle valve. The turning of the regulator by the thumb nut will of course run it in or out as the case may be and thus because of the engagement of its conical point against the forward side of the hole 10 in the needle valve, the latter will be caused to move by slow gradations toward or from the gas exit hole 4 in the tip of the device and thus the flow of gas may be regulated with great exactness because the point of the valve moves toward or from the gas exit opening with exceedingly small or slow movements.

Up to this point this present invention is quite similar to that patented in and by the above stated Letters Patent No. 890,122 dated June 9, 1908, but here an important difference is incorporated. The threaded regulating screw 12 serves to project the needle valve outwardly, thus cutting 01f the flow of gas and in order that it may be retracted and remain in contact at all times with the conical point of the regulating screw, I employ a spring 16, but instead of locating it at or near the needle like extremity of the needle valve, as in said patent, I remove it to the extreme opposite end thereof. The spring engages in a small hole 17 in or near the lower edge of the needle valve and is given such circular shape that it rests against and is supported by a shoulder 18 on the interior wall of the body part of the fixture as shown. Because of this construction, I secure several important advantages, first, as stated, the spring is far removed from the extremity of the valve which co-acting with the gas exit hole in the tube controls the flow of gas, so that such flow is not obstructed by the presence of the spring at or near the point stated and also the likelihood of accumulations of deposits at or near that point which would be apt to injuriously affect the operation of the device is reduced; and second, because of this change in the location of the spring, I am enabled to make it in a relatively large ring-like form adapted to be supported on the shoulder 18 of the body part and thus there is no obstruction whatsoever to the flow of gas coming from the gas supply pipe, excepting the single strand or wire of the spring which extends from its ring-like part supported on the shoulder 18 to the hole in the lower edge of the valve. In making this statement, however, I do not limit myself to a ring-like spring, such as illustrated in these drawings, nor to the special manner of combining it with the other parts, because it will be obvious to those who are familiar with such matters that springs of other construction and otherwise combined with the co-acting parts may be substituted, but the fact is that if the spring be constructed and arranged as I have illustrated and above described it, then the practical advantages referred to will result.

I claim:

In a gas regulator a thin, flat and perforated needle valve, a threaded stem having a conical end which works within the perforation in the valve and a retractile spring connected at one end with the valve at a point opposite its pointed extremity and supported upon the body part of the structure.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK M. BROOKS. lVitnesses:

EDWIN F. VALENTINE, PHILLIPS ABBOTT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

